The Wolverine F2D was easy to use and the slides could be copied in seconds. My problem with my particular F2D was a copy of my 35mm slide. It was very grainy and fuzzy. Something must have been wrong with the light source because even the preview was of poor quality. I even compared it to a preview I got with a battery powered viewer lit by an old fashioned battery powered lightbulb. The old viewer provided a sharp image of my slide, much better than F2D. I was happy with Revane's return policy.